When you look at a YouTube video, pull up a Netflix stream, watch a video on a site, or any kind of standard Internet video, it's probably unicast-it's going to you on demand, from start to finish.
当你观看YouTube、netflix流媒体、某个网站的视频，或者任何一种网络视频，它都极可能是单播的——它按照从开始到结尾的顺序发送给你。
Each node runs both the unicast routing protocol and the multicast routing protocols on a dynamic on demand basis, and interfaces seamlessly with the existing Internet infrastructure.
实验床中的各移动节点都运行按需单播路由协议与多播路由协议，并可通过基站系统与有线骨干网连接。
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